76 MR. K, ANDERSEN OX BATS [May 16, 



1 include in this group 40 different forms (22 species), correspond- 

 ing to Eh. megcqjhyllus, affinis, ccqyensis, clivosus, and ferrii'm- 

 equimmi in Dobson's ' Catalogue of the Ohiroptera in the Britisli 

 Museum.' Only the Austro-Malayan, Oriental, and Pala^arctic 

 forms will be described below, and only the first species in some 

 detail, the description of the other forms being, as a rule, confined 

 to the points in which they difier from the fundamental type. 

 The Ethiopian species will be briefly mentioned in the " General 

 Remarks" on the group (p. 117). 



1, Rhinolophus simplex, sp. n. (Plate III. fig. 1.) 



Diagnosis. Cranial character : supraoi-bital crests meeting at a 

 point behind the middle of the orbit. External : sella distinctly 

 constricted at middle. Forearm 44*2 mm. 



Details. Nose-leaves large, as compared with those of the other 

 Austro-Malayan species (i?A. truncatus, na7ius). A supplementary 

 leaflet distinctly visible in front of, and on the anterior part of the 

 sides of, the horseshoe ; a character common to all the members of 

 the present group, but becoming gradually less pronounced in the 

 more highly developed species {c(ffi,nis, ferrimi-eqidmmi, and their 

 allies) ; it seems to point back to the much more pi-imitive genus 

 liipposiderus. Horseshoe so broad as to completely cover the 

 upper lip ; a slight indication of a tooth-like projection on either 

 side of the median notch. Sella decidedly broader at base than at 

 summit, and distinctly constricted at middle ; summit rounded ; 

 height of sella, from angle between vertical portion and nasal lobe, 

 about 4'8 mm., width at base 2"3, at constriction 1'9, at summit 

 rS mm. ; front of sella densely covered with exceedingly short 

 white haii'S (scarcely observable without a lens). Posterior con- 

 necting process low and broadly rounded ofi". Lancet long, almost 

 cuneate ; length, from posterior transverse bridge, about 4*7 mm. 

 Three mental grooves, as in all forms of this group, except the 

 highest-diflferentiated species [feo^rimn-eqvAmim and its nearest 

 relations). 



Ears, compaied with those of the closely allied Austi^o-Malayan 

 species, rather large, almost reaching the tip of the muzzle when 

 laid forwards. Upper part of outer mai-gin somewliat concave ; 

 tip blunt ; no constriction below tbe tip. 



Wing-structure very primitive : 4th and 5th metacai-pals sub- 

 equal in length (the 5th, if anything, a little shorter), and both of 

 them but very slightly longer than 3rd; III."* less than Ij the 

 length of III.' ; lY.' and, especially, V.' very short, being only a 

 trifle longer than lY.^ and Y.^ This structure of the wing is 

 characteristic of all the jjrimitive members of this gi'oup {^simplex, 

 megaphyllus 1 truncatus, nantos, celehensis, horneensis, malayanus, 

 rouxi, &c.) ; it is first in so highly- developed forms as affinis and 

 its various modifications {ferrum-equinu'ni, &c.) that we find an 

 important progress : prolongation of III." ; shortening of the 3rd 



* For brevity's sake I call the proximal phalanges of the Srd, 4th, and oth fingers 

 III.i, IV.', and V.i, the distal phalanges of the same fingers III.-, IV.-, and V." 



